iPlayMusic has launched the beta version of a new download service, providing chords, music and lyrics for songs from a user's iTunes library. Chords for iTunes synchronizes video with the audio of an iTunes track, allowing users to slow down or speed up while maintaining proper pitch.

The beta currently supplies videos for 26 songs, allowing musicians to sing or play along with tracks from James Taylor, Jimmy Buffett and others. Program participants can make requests for additional songs. The eventual plan is to offer thousands of videos, each available for a price; until the beta expires on September 26th, videos are free.

To comply with copyright laws, users must already own a track before it can be synchronized. To access the Chords clips, people must download the company's software, which enables access to an online marketplace similar to the iTunes Store. Once a video is synced with an iTunes song it can be exported to GarageBand, as well as an iPod, iPhone or Apple TV. The needed iPlayMusic app is free, and requires Mac OS X 10.4 or later.